Stove



A ril 15, W24; 3,49%,135

F. A. c. SKINNER swo'va Filed Dec. 16. 1922 Patented Apr, 15, 1,924.

I FRED A. G. INNER, ST. LOUIS, MISSOURI.

STOVE.

. Application filed December 18, 1922. Serial No. 607,880.

To an whom it may concern:

Be it known that I, Fnnn A. C. Sxmm a citizen of the United States, residing at t. Louis, State of Missouri, have invented certain new and useful Improvements in Stoves,

of which the following is a specification.

The present invention is directed to improveinents in air heating stoves, and has for its object to provide a simple construction of stove which will present a maximum heating surface to the air currents traversing the outer casing of the stove and at the same time cause the body of air to take up or ab- 'sorb the greatest number of heat units from the heating surfaces before the same is discharged from the casing. lhe improvement herein lies princi all in the specific character of the hot air circulating pipe leading to the flue where the waste gases give up most of their heat before discharging. Further advantages will fully appear from the following detailed description in connection wig the accompanying drawings, in wh1ch- 1 gitu inal section through the stove and outer casin Fig. 2 is a horizontal cross section on the line 2-2 of Fig. 1 through the outer casin the stove and air circulating pipe beerring to the drawings, 1 represents a conventional form of coal burning stove providedhwith .a feed charging mouth 2 closed by a'door 3, a grate i, and ash compartment 5 with the usual door 6 as well understood in the art; The stove proper islpreferably made. in sections as shown (Fig. for urposes of hauling and ship ing, the an of one section being received ya recess or oficharge fiue 9, mid flue being. connected to the I intake 10 of a hot-air pipe or annular chamber 11 for the circulation of the products of combustion which discharge through the outlet 12 to the stack (not shown). The chamber llis provided with. a clean-out 13 just opposite the intake 10, said clean-out 13 re 1 re resents a middle vertical lonthe the fan F and then circulates through the being provided with a door 13' which is normally closed but may be opened to check the stove draft and to provide increased air circulation through the chamber 11. By slightly opening the door 13' a small complement 0 air may be admitted to the cham ber 11 for the purpose of furthering the combustion of the smoke, or, when necessary, the door 13' may be opened suficie'ntly to cause the increased draft to carry the heavier particles of soot, ash, etc., out of said chamberg. A further advantage of the chamber 11 1s 0 heat om the stove and to reduce the rod-. nets of combustion as much as possib e by the an circulating through the. casing'8 before they ass out to the stack. I

It will observed that the inner wall of the chamber 11 is inclined inwardly and hugs the dome 1' as closely as possible without unduly1 restricting the passage of the air between t e dome and said inclined wall. The object of this is to obtain as large a cross-sectlonal area as possible of the cham ber- 11 without increasing the diameter or hei ht of the casing 8.

e fuel charging mouth 2 necessarily ertends across the hot air chamber 0 through the casin wall to ermit the introduction of the fue into the re pot of the stove.

The stove is provided with a conical bafile plate 14 disposed across the combustion chamber ofthe stove, near the top thereof and just below the dome 1', said bafie being secured to the stove wall by four brackets 15 so as to leave an annular space a between the bafie and said wall. As the hot ses rise in the combustion chamber they will be defiected by said baflie to the walls of the combustion chamber licking said walls and the dome 1', and impartin their heat thereto for radiation into the ot airchamber C. Thus a greater part of the heat of the combustion gas will be radiated from the stove before leaving the combustion chamber.

The outside air is drawn into the casing by easing chamber C as indicated by the arrows in Fig.1, the air particles becoming thoroughly heated by contact with the walls of the stove, hot air pipe, and the inner walls of the casing. Features shown in the drawings but not alluded to are well understood in the art and require no description in the present connection.

Having described my invention, 1 claim:

rovide an increased radiation of the In an air-heating stove, an inner stove, an outer casing spaced therefrom, said inner stove being provided at the top with a dome having a lateral smoke outlet, 9. deflector within said stove immediately below the dome and spaced from the wall of the stove, and an annular smoke pipe positioned around said dome and having an outletand shape of a truncated cone with the periphcry of the base in close proximity to the bottom of the dome.

In testimony whereof I hereunto affix my signature. e

1 FRED A. G. SKINNER. 

